NZ527376A - Resin-impregnated substrate, method of manufacture and system therefor - Google Patents

Resin-impregnated substrate, method of manufacture and system therefor

Info

Publication number
NZ527376A
NZ527376A NZ52737602A NZ52737602A NZ527376A NZ 527376 A NZ527376 A NZ 527376A NZ 52737602 A NZ52737602 A NZ 52737602A NZ 52737602 A NZ52737602 A NZ 52737602A NZ 527376 A NZ527376 A NZ 527376A
Authority
NZ
New Zealand
Prior art keywords
resin
impregnated substrate
substrate
water
manufacture
Prior art date
Application number
NZ52737602A
Inventor
John Colvin
Charles Vignal
Philippe Edouard Tissot
Larry Raymond Crowe
Original Assignee
Houston Advanced Res Ct
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Houston Advanced Res Ct filed Critical Houston Advanced Res Ct
Publication of NZ527376A publication Critical patent/NZ527376A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02Processes; Apparatus
    • B27K3/15Impregnating involving polymerisation including use of polymer-containing impregnating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31591Next to cellulosic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31971Of carbohydrate
    • Y10T428/31989Of wood
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31971Of carbohydrate
    • Y10T428/31993Of paper
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/4935Impregnated naturally solid product [e.g., leather, stone, etc.]
    • Y10T428/662Wood timber product [e.g., piling, post, veneer, etc.]

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Reinforced Plastic Materials (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Fats And Perfumes (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A method of increasing the strength and water resistance of a substrate of a lignocellulosic material, comprising the steps of: -impregnating a substrate of a lignocellulosic material with an isocyanate resin material; - removing excess isocyantate resin material from the impregnated substrate by impinging air at a high flow rate upon the impregnated substrate; - polymerizing the resin by applying water to the impregnated substrate, the water being at a temperature sufficient for polymerization; and - removing the water from the polymerized resin-impregnated substrate, is disclosed. A building article having a smooth, low-gloss surface that is produced by the said method is also disclosed.
NZ52737602A 2001-02-13 2002-02-13 Resin-impregnated substrate, method of manufacture and system therefor NZ527376A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/781,560 US6620459B2 (en) 2001-02-13 2001-02-13 Resin-impregnated substrate, method of manufacture and system therefor
PCT/US2002/004085 WO2002064337A2 (en) 2001-02-13 2002-02-13 Resin-impregnated substrate, method of manufacture and system therefor

Publications (1)

Publication Number Publication Date
NZ527376A true NZ527376A (en) 2005-04-29

Family

ID=25123144

Family Applications (2)

Application Number Title Priority Date Filing Date
NZ537329A NZ537329A (en) 2001-02-13 2002-02-13 Resin-impregnated substrate, method of manufacture and system therefor
NZ52737602A NZ527376A (en) 2001-02-13 2002-02-13 Resin-impregnated substrate, method of manufacture and system therefor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NZ537329A NZ537329A (en) 2001-02-13 2002-02-13 Resin-impregnated substrate, method of manufacture and system therefor

Country Status (15)

Country Link
US (3) US6620459B2 (en)
EP (1) EP1372920B1 (en)
JP (1) JP2004521777A (en)
KR (1) KR20020067435A (en)
CN (1) CN100368168C (en)
AT (1) ATE391590T1 (en)
AU (1) AU2002245423B2 (en)
CA (1) CA2437826C (en)
DE (1) DE60226016T2 (en)
DK (1) DK1372920T3 (en)
ES (1) ES2302798T3 (en)
HK (1) HK1067093A1 (en)
NZ (2) NZ537329A (en)
PT (1) PT1372920E (en)
WO (1) WO2002064337A2 (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6686566B1 (en) * 2002-03-15 2004-02-03 Dave O. Corey Infrared drying and curing system for circuit boards
EP1606088B1 (en) * 2003-02-24 2010-12-01 Jeld-Wen Inc. Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same
US7943070B1 (en) 2003-05-05 2011-05-17 Jeld-Wen, Inc. Molded thin-layer lignocellulose composites having reduced thickness and methods of making same
WO2005003499A1 (en) * 2003-07-01 2005-01-13 Jeld-Wen, Inc. Methods and systems for the automated manufacture of composite doors
US7439280B2 (en) * 2004-04-06 2008-10-21 Basf Corporation Lignocellulosic composite material and method for preparing the same
BRPI0516720A (en) 2004-09-30 2008-09-16 Jeld Wen Inc container for treating a plurality of pieces of wood with a liquid, adhesive, method for treating wood, wood product and system
US20060208385A1 (en) * 2005-03-17 2006-09-21 Ahmet Ceritoglu Process for manufacturing a solid door from a fiber plate (board) using a molding press
US20090130377A1 (en) * 2005-08-16 2009-05-21 A B Composites Private Limited Natural Fibre Thermoset Composite Product and Method For Manufacturing the Same
US7625631B2 (en) * 2005-08-31 2009-12-01 Huber Engineered Woods Llc Wood panel containing inner culm flakes
US20070122616A1 (en) * 2005-11-30 2007-05-31 Lawson Eric N Panel containing bamboo and cedar
US20070116940A1 (en) * 2005-11-22 2007-05-24 Ou Nian-Hua Panel containing bamboo
US20090263617A1 (en) * 2005-08-31 2009-10-22 Huber Engineered Woods Llc Panel containing bamboo
US7459206B2 (en) * 2005-08-31 2008-12-02 Huber Engineered Woods Llc Panel containing highly-cutinized bamboo flakes
US20070049152A1 (en) * 2005-08-31 2007-03-01 Ou Nian-Hua Panel containing bamboo
US20070077445A1 (en) * 2005-09-30 2007-04-05 Lawson Eric N Panel containing bamboo and fungicide
US20070074831A1 (en) * 2005-09-30 2007-04-05 Winterowd Jack G Systems and methods for treating raw materials for wood product formation
AU2006311856A1 (en) * 2005-11-02 2007-05-18 Richard M. Grabowski Self-forming structures
US20070169427A1 (en) * 2006-01-24 2007-07-26 Lee David E Iii Decorative grid system and method
US20080163572A1 (en) * 2006-01-24 2008-07-10 David Eugene Lee Decorative grid system and method
FR2902685B1 (en) * 2006-06-21 2010-02-26 Michel Faivre METHOD FOR SEALING A WOOD JOINERY ELEMENT, AND COMPONENT THUS OBTAINED
WO2008027390A2 (en) 2006-08-28 2008-03-06 Masonite Corporation Method of sealing a porous fibrous substrate, and door skins, produced by the method
EP2042560A1 (en) * 2007-09-19 2009-04-01 Basf Se Lightweight wooden materials with good mechanical properties and low formaldehyde emission
US20090114123A1 (en) * 2007-11-07 2009-05-07 Jeld-Wen, Inc. Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same
AU2008325167B2 (en) 2007-11-07 2013-03-21 Jeld-Wen, Inc. Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same
US7819147B1 (en) 2008-04-14 2010-10-26 Engineering Research Associates, Inc. Chipboard
US8058193B2 (en) 2008-12-11 2011-11-15 Jeld-Wen, Inc. Thin-layer lignocellulose composites and methods of making the same
NL2002414C2 (en) 2009-01-13 2010-07-19 Drywood Coatings B V METHOD FOR COATING A COMPOSITE LIGNOCELLULOSE ELEMENT.
ES2585367T3 (en) * 2009-04-17 2016-10-05 Flooring Technologies Ltd. Procedure for manufacturing a wood composite plate
SE534884C2 (en) * 2010-04-28 2012-01-31 Mb Aedeltrae Ab Method for processing a disc as well as a disc element
BE1019501A5 (en) 2010-05-10 2012-08-07 Flooring Ind Ltd Sarl FLOOR PANEL AND METHOD FOR MANUFACTURING FLOOR PANELS.
US8784610B1 (en) 2010-12-27 2014-07-22 George A. Whiting Paper Company Method for making paper from post-industrial packaging material
ES2882479T3 (en) * 2011-01-06 2021-12-02 Flooring Technologies Ltd Procedure and device for the partial treatment of the surface or the entire cross section of a plate of wood material or of a board made of pre-compacted wood material or of a cake of wood fibers
DE102015206941A1 (en) * 2015-04-17 2016-11-10 Cefla Deutschland Gmbh Method for producing a fiberboard with improved chemical and mechanical properties
CN105171865B (en) * 2015-08-05 2016-09-14 李新发 Sheet material waxdip equipment
EP3163000B1 (en) 2015-10-27 2021-09-01 Erkado Spólka z ograniczona odpowiedzialnoscia A method for manufacturing a door panel with door frame elements
US20180308034A1 (en) * 2015-12-11 2018-10-25 Halliburton Energy Services, Inc. New Foamed Diverter/Sand Control Model for Fluid Diversion in Integrated Wellbore-Reservoir System
JP6844218B2 (en) * 2015-12-23 2021-03-17 ブリヂストンスポーツ株式会社 Golf ball manufacturing method and golf ball
CN105619554A (en) * 2016-02-24 2016-06-01 福人集团邵武木业有限公司 Manufacturing method of bamboo fiber shaving board
CN106003335A (en) * 2016-07-29 2016-10-12 安徽昌发实业有限公司 Bamboo sheet softening method
CN106217536B (en) * 2016-08-04 2018-01-16 南京博俊新材料有限公司 A kind of cross-linking type Wood modifier
ES2941275T3 (en) * 2016-09-02 2023-05-19 Jowat Se Procedure for surface processing of wooden materials
US10745563B2 (en) 2017-03-14 2020-08-18 E&K Holdings, Llc Flax straw fiber based building material
CN109096783A (en) * 2017-06-20 2018-12-28 广州木森态新材料科技有限公司 A kind of environment-friendly modified isocyanate resin water-based emulsion and its manufacturing method
CN108748517B (en) * 2018-04-24 2021-05-25 广州精点高分子材料制品有限公司 Ceramic wood based on oxime end capping and manufacturing method thereof

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE452994A (en) * 1941-11-21
NL86080C (en) 1954-05-11 1900-01-01
US3492081A (en) 1965-06-08 1970-01-27 Container Corp Method of treating paper with isocyanates blocked with cyclohexanol
US3485575A (en) 1966-02-21 1969-12-23 Container Corp Modification of linerboard to improve retention of stiffness
SE357222B (en) 1968-08-27 1973-06-18 Takeda Chemical Industries Ltd
DE2325926C2 (en) * 1973-05-22 1990-08-02 Bayer Ag, 5090 Leverkusen Process for the production of materials containing lignocellulose
US4029846A (en) 1975-05-20 1977-06-14 Eagle-Picher Industries, Inc. Fiberboard shims and method of making them
US4137046A (en) 1975-10-07 1979-01-30 Mitsubishi Paper Mills, Ltd. Transparent cellulosic paper and method for making the same
US4396647A (en) 1982-02-22 1983-08-02 Ashland Oil, Inc. Vapor permeation curable coating compositions containing 2,3',4-trihydroxydiphenyl
DE3239094A1 (en) * 1982-10-22 1984-04-26 Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH, 4150 Krefeld METHOD AND DEVICE FOR REINFORCING FIBER MOLDED PARTS
US4587141A (en) 1983-12-15 1986-05-06 U.S. Plywood Corporation Laminated panel and process
DE3523856A1 (en) 1985-07-04 1987-01-08 Bayer Ag AQUEOUS SOLUTIONS OR DISPERSIONS OF POLYISOCYANATE ADDITION PRODUCTS, A METHOD FOR THE PRODUCTION THEREOF, AND THEIR USE AS A COATING OR SIZING AGENT FOR PAPER
US4857252A (en) 1987-09-11 1989-08-15 Eagle-Picher Industries, Inc. Fiberboard shims containing blocked isocyanates
DE3731430A1 (en) * 1987-09-18 1989-04-06 Battelle Institut E V Process for producing and/or reinforcing chipboards
GB8813396D0 (en) 1988-06-07 1988-07-13 Earl H A Composite materials
JPH0261204A (en) 1988-08-27 1990-03-01 Yamau:Kk Block
US5008359A (en) 1988-11-25 1991-04-16 Weyerhaeuser Company Isocyanate modified cellulose products and method for their manufacture
EP0389201B1 (en) 1989-03-20 1993-12-22 Medite Of Europe Limited Apparatus and method of manufacturing synthetic boards including fire-retardant boards
US5332458A (en) 1991-04-29 1994-07-26 Weyerhaeuser Co Corrugated paperboard strength enhancing process
CA2048388C (en) 1990-08-16 1996-12-03 Yasuo Tamura Laminated material and process for manufacturing the same
US5605605A (en) 1992-03-02 1997-02-25 Imperial Chemical Industries Plc Process for treating and sizing paper substrates
JP2645627B2 (en) 1992-03-03 1997-08-25 中国塗料株式会社 Wood material coloring method and apparatus
DE4225780C1 (en) 1992-08-04 1994-01-05 Battelle Institut E V Process for re-consolidating damaged paper
DE59305310D1 (en) 1992-08-07 1997-03-13 Bayer Ag Chlorine-free multifunctional resins for paper finishing
SE505234C2 (en) * 1992-11-12 1997-07-21 Swedoor Ab Door mainly intended as front door
JP3187180B2 (en) * 1992-12-22 2001-07-11 日本ポリウレタン工業株式会社 REINFORCED FIBERBOARD AND PROCESS FOR PRODUCING THE SAME
FI94607C (en) 1993-05-28 1995-10-10 Finnforest Oy Process for hardening wood material
CN1181099A (en) 1995-04-13 1998-05-06 帝国化学工业公司 Process for binding lignocellulosic material
ES2148929T3 (en) * 1996-02-14 2000-10-16 Windsor Technologies Ltd PROCEDURE FOR PREPARING A SHEET OF A LIGNOCELLULOSIC MATERIAL FOR THE MANUFACTURING OF A FINISHED PRODUCT AND MANUFACTURING PROCEDURE OF A FINISHED PRODUCT.
WO1997045591A1 (en) * 1996-05-29 1997-12-04 Windsor Technologies Limited Method of applying a powder coating to a length of a lignocellulosic material
ZA975821B (en) 1996-07-01 1998-07-01 Ici Plc Process for binding lignocellulosic material
JPH10323809A (en) 1997-05-27 1998-12-08 Matsushita Electric Works Ltd Manufacture of water resistive dense fiber board
WO1998056729A1 (en) 1997-06-12 1998-12-17 Windsor Technologies Limited Method of preparing exfoliated vermiculite for the manufacture of a finished product
JP3888797B2 (en) 1999-03-26 2007-03-07 大建工業株式会社 Manufacturing method of wood fiberboard
US6458238B1 (en) * 2000-12-29 2002-10-01 Basf Corporation Adhesive binder and synergist composition and process of making lignocellulosic articles

Also Published As

Publication number Publication date
US6620459B2 (en) 2003-09-16
EP1372920A2 (en) 2004-01-02
CA2437826C (en) 2008-05-27
WO2002064337A3 (en) 2003-02-27
EP1372920B1 (en) 2008-04-09
DE60226016D1 (en) 2008-05-21
DK1372920T3 (en) 2008-06-23
US20020155223A1 (en) 2002-10-24
PT1372920E (en) 2008-05-09
US20040063891A1 (en) 2004-04-01
US7585566B2 (en) 2009-09-08
CN100368168C (en) 2008-02-13
ATE391590T1 (en) 2008-04-15
JP2004521777A (en) 2004-07-22
AU2002245423B2 (en) 2005-11-24
US20050171313A1 (en) 2005-08-04
NZ537329A (en) 2005-05-27
KR20020067435A (en) 2002-08-22
ES2302798T3 (en) 2008-08-01
CN1514763A (en) 2004-07-21
CA2437826A1 (en) 2002-08-22
DE60226016T2 (en) 2009-05-28
HK1067093A1 (en) 2005-04-01
WO2002064337A2 (en) 2002-08-22

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